738 | W-600Series Controllers DellPowerConnectW-SeriesArubaOS6.2 | User Guide
Figure 338: Port I/O error
Once you find one (or more) modem TTY port, configure it in the cellular profile and test the port.
Testing the TTY Port
After your TTY port is correctly configured, the port is in the 'Device Ready' state.
Figure 339: Device Ready State
The 'Device Ready' state indicates the port has passed the diagnostic test and is ready.
You can also run extended diagnostics to displays more information about the modem.
NOTE: Not all modems support the extended AT command set. If the modem hangs after sending an extended AT command;
removing the device and then re-inserting it usually fixes the problem
The AT+CSQ command queries is the modem's current signal strength. The first number represents the signal
ranging from 1 (poor) to 33 (excellent). In the example below, the strength is in the excellent range (31).
Figure 340: usb test extended.
Selecting the Dialer Profile
The phone number, user name, and password (if any) are set in the dialer setting. In the United States, AT&T and
T-Mobile use the 'gsm_us' profile, while Sprint and Verizon use the 'evdo_us' profile. User names and passwords are
not typically used by U.S. carriers, but they may be required by International carriers.
Choose the dialer group that matches your carrier. If one doesn't exist, create a new dialer group with information
from your carrier (Figure 341)
